There is 3 Round of Interview. 1St one is HR Round. 2nd is Technical Round. 3rd is F2F round. Hr round is a very simple round to face , here u have ask about yourself and activity, your culture also. 2nd face of interview is technical, it quite complicated. Here you have face some tuff level of your experience.You also asked by them about every single point mention in your cv. 3rd level of interview is a document verification. Communication skill check by interviewer. After successfully completed these level you will select for reputed role as a Network Engineer.